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(a)
R
R
O
Cl
Cl
O
H
2
C
O
H
2
C
O
O
CHCl
3
room temp, 72 h
O
O
O
O
O
O
H
n
O
O
H
n
mcl-PHA
m-CPBA
Epoxidized mcl-PHA
R
(b)
Nu
H
R
O
R
R
O
H
R
O
:Nu
Nu
O
C
H
2
O
Nu
O
O
O
H
2
C
H
2
C
O
H
2
C
O
H
2
C
O
O
Crosslinking
:Nu
Nu
H
O
O
O
O
O
O
O
O
n
n
Alkoxide anion of
n
Epoxidized mcl-PHA
epoxidized mcl-PHA
Crosslinked epoxidized mcl-PHA
Figure 7.5
(a) Epoxidation of mcl-PHA using m-CPBA; (b) ether cross-linking of the epoxidized mcl-PHA.
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